A cascaded reconfigurable RH/CRLH-zero-phase microstrip transmission line unit cell

Braaten, Benjamin D.; Roy, Sayan; Ullah, Irfan; Nariyal, Sanjay; Ijaz, Bilal; Masud, Muhammad Mubeen; Naqvi, Syed Aftab; Iftikhar, Adnan

doi:10.1109/icwits.2012.6417783

Cited by 5 publications

(4 citation statements)

References 3 publications

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“…Once this was known, half‐wavelength design procedures for printed dipoles and the layout procedure summarized in Ref. was used to finalize the dimensions of the array. A picture of the manufactured prototype is shown in Figure A and a closer image of the CRLH interconnect is shown in Figure B.…”

Section: Prototype Design Simulation and Experimental Resultsmentioning

confidence: 99%

Metamaterial‐inspired series‐fed frequency reconfigurable array with zero‐phase CRLH interconnects

Ijaz

Khan

Asif

et al. 2017

Micro & Optical Tech Letters

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Devices with multiband wireless system capabilities have significantly benefited from the introduction of frequency reconfigurable antennas. However, much of the development on frequency reconfigurable antennas has been on single antenna elements. In this letter, a frequency reconfigurable series‐fed array is presented that has the benefits of broad‐side radiation at two different frequencies. The proposed antenna consists of four reconfigurable dipoles interconnected with reconfigurable zero‐phase composite right‐/left‐handed (CRLH) transmission lines (TLs). PIN diodes are then used to switch between the two measured frequency bands of 2.04–2.18 GHz and 2.44–2.58 GHz. The developed prototype presented here showed a near broadside radiation pattern in both switching bands and a maximum gain of 2.1 dBi was measured in both switching bands. It is shown that instead of meander‐line interconnects between the dipole elements, much more compact frequency reconfigurable CRLH‐TLs can be used.

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Section: Prototype Design Simulation and Experimental Resultsmentioning

confidence: 99%

Metamaterial‐inspired series‐fed frequency reconfigurable array with zero‐phase CRLH interconnects

Ijaz

Khan

Asif

et al. 2017

Micro & Optical Tech Letters

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“…The PIN diodes were modelled using the equivalent circuit defined in the data sheet and the lumped elements were used in HFSS in a manner to the methods reported in [11] and [12]. For the ON-state, the diodes were modelled using the equivalent circuit shown in Fig.…”

Section: A Prototype Testingmentioning

confidence: 99%

“…Then, when switch S 2 was connected to the arm, the CRLH-TL1 interconnects provided the path for current to travel along the array. For a starting point, the CRLH-TL unit cells reported in [11] were adopted and finalized with a parametric study in HFSS. The layout and equivalent circuit of the CRLH-TL interconnects is shown in Fig.…”

Section: Design Of the Arraymentioning

confidence: 99%

A Frequency-Reconfigurable Series-Fed Microstrip Patch Array With Interconnecting CRLH Transmission Lines

Khan

Capobianco

Iftikhar

et al. 2016

Antennas Wirel. Propag. Lett.

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This paper presents the design of a frequency reconfigurable series-fed microstrip patch array in which the elements are interconnected with composite right/left-handed transmission lines (CRLH-TLs). Reconfigurable CRLH-TLs are used instead of meandered microstrip lines to reduce the overall size of the array and provide two different zero-phase frequencies of operation for broadside radiation in both instances. PIN diodes were used to reconfigure the array by changing the electrical lengths of the patches and microstrip sections of the CRLH-TLs. The measurements were taken in an anechoic chamber to verify the simulation results. The array can be reconfigured to operate at 1.97GHz and 2.37GHz.

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“…Reconfigurable structures have several advantages over tunable structures such as higher frequencies of operation, simple control voltages (i.e., there is not the requirement of a precision controlled voltage source) and are a more efficient solution to shielding applications for multiple frequencies. Some of the initial work on reconfigurable metamaterial transmission lines was reported in [19]. This involved a reconfigurable composite right-/left-handed (CRLH) transmission line [4] with pin diodes embedded into the design.…”

Section: Introductionmentioning

confidence: 99%

A reconfigurable dual-band metasurface for EMI shielding of specific electromagnetic wave components

Masud

Ijaz

Iftikhar

et al. 2013

2013 IEEE International Symposium on Electromagnetic Compatibility

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Metasurfaces are becoming more of an interest to the research community because of the unusual electromagnetic properties that can be achieved. This paper presents a reconfigurable metasurface for EMI shielding purposes. In particular, a dual-band Jersualem cross is developed and pin diodes are use to interconnect elements to control the specific polarization properties of the shield. It is shown that the response of the shield to specific field components can be controlled with simple control voltages. Simulations are validated with measurements throughout this work.

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A cascaded reconfigurable RH/CRLH-zero-phase microstrip transmission line unit cell

Cited by 5 publications

References 3 publications

Metamaterial‐inspired series‐fed frequency reconfigurable array with zero‐phase CRLH interconnects

Metamaterial‐inspired series‐fed frequency reconfigurable array with zero‐phase CRLH interconnects

A Frequency-Reconfigurable Series-Fed Microstrip Patch Array With Interconnecting CRLH Transmission Lines

A reconfigurable dual-band metasurface for EMI shielding of specific electromagnetic wave components

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